my farm is loaded up w/ pawpaw trees... And as far as Im concerned the deer primarily use them for cover... which is what they love about them... 90% of the deer I see are moving through the pawpaws... That being said, it is one of the sweetest fruits around and is extremely nutricious. Its amazing that cutting one in half and less than a min later its brown. My guess is that the deer nibble on them when they go by, but since they ripen in early fall there is so much other food that the deer walk past em... IE: corn, beans, and acorns. It could also be that they are so abundant on my farm the deer just dont eat them fast enough... They get rotten really quick. I will take note this weekend when im hunting to see if the deer eat them... but I usually stay out of the pawpaws and hunt the edges since the deer bed in them.
Rob - Its a deciduous tree native to the eastern us. ranges from FL to NY. ITs very abundant on the eastern shore of MD... maybe thats where our bucks get their size

Interestingly it bears the largest fruit native to North America. It looks like it should be asain or from the rainforest. Big huge leaves in large clusters.. Basically a big bush w/ big leaves...